Withdrawal
Pic. 8.67. Loosening the hub bolt
Loosen the hub bolt with a wrench (pic. 8.67).
Pic. 8.68. Removing the hub and shim from the compressor shaft
Remove the hub and shim from the compressor shaft. If removal is difficult, screw an 8 mm bolt into the hole in the end of the shaft and remove the hub from the shaft (pic. 8.68).
Pic. 8.69. Removing the circlip of the pulley
Remove the pulley snap ring (pic. 8.69).
Pic. 8.70. Removing the pulley from the compressor
Remove the pulley assembly with the bearing from the compressor (pic. 8.70).
Installation
Clean the pulley and bearing seating surfaces in the compressor head to remove dirt and rust.
Pic. 8.71. Installing the pulley and bearing on the compressor
Install the pulley and bearing on the compressor (pic. 8.71).
Pic. 8.72. Retaining ring installation
Install retaining ring chamfered out (pic. 8.72).
Pic. 8.73. Installing the shim
Install a shim of the required thickness with the splined grooves inward, install the hub on the end of the compressor shaft (pic. 8.73).
Screw a new hub bolt into the end of the compressor shaft and tighten it to the required torque
Tightening torque: 11–14 Nm.
Attention! Do not use pneumatic tools.
Pic. 8.74. Checking clearance between clutch hub and pulley surface
Check the gap between the clutch hub and the pulley surface with a feeler gauge (pic. 8.74).
Coupling installation gap: 0.05–0.08 mm.
Check the clearance at 3 points around the pulley.
If the hub installation gap is not within the specified limits, adjust it by installing an adjusting shim of the appropriate thickness.